Replacement for Cisco878: Drop-In Alternatives We Stock
Looking for a replacement for the Cisco878 (Cisco878 - Cisco 878 SHDSL Security Router)? Pro Disk Network ships Cisco drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the Cisco878
| SKU | Cisco878 |
|---|---|
| Product | Cisco878 - Cisco 878 SHDSL Security Router |
| Stock status | In Stock |
| Detail page | View Cisco878 › |
Drop-in replacements for Cisco878
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
CISCO878-SEC-K9 - Cisco 878 G.SHDSL 4 x 10/100Base-TX LAN + 1 x WAN + 1 x ISDN BRI (S/T) WAN Integrated Services Router
SKU: CISCO878-SEC-K9
Price: $250.53
RVS4000 - Cisco 230V 4-Port 10/100/1000Base-T Gigabit Ethernet Security Bundle Router
SKU: RVS4000
Price: $189.47
RV110W-A-NA-K9 - Cisco RV110W 100Mbps 5-Ports 10/100 Wireless N Router VPN Network Security/Firewall Appliance
SKU: RV110W-A-NA-K9
Price: $318.32
C926-4P - Cisco 926 Gigabit Ethernet security router with VDSL/ADSL2 ISR900
SKU: C926-4P
Price: $954.95
C881-K9 - Cisco 230V 4-Port 10/100/1000Base-T Gigabit Ethernet Security Bundle Router
SKU: C881-K9
Price: $1,489.01
CISCO891W-AGN-A-K9 - Cisco 891W Gigabit Ethernet Security Router with 802.11n FCC Compliant
SKU: CISCO891W-AGN-A-K9
Price: $3,280.42
Cisco C2921-VSEC-CUBE/K9 2921 Voice Security and CUBE Bundle - router - voice / fax module - desktop
SKU: C2921-VSEC-CUBE-K9
Price: $3,498.53
Cisco ISR4351-SEC/K9 ISR 4351 3-Port 10-Slot 10/100Base-T Gigabit Ethernet Security Bundle Router
SKU: ISR4351-SEC-K9
Price: $6,798.59
Cisco CISCO2911-V/K9 230V 10/100/1000Base-T Gigabit Ethernet Security Bundle Router
SKU: CISCO2911-V-K9
Price: $7,931.37
MEM-7301-FLD64M - Cisco 64MB CompactFlash (CF) Memory Card for 7301 Router Series Router
SKU: MEM-7301-FLD64M
Price: $116.33
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.